*{
    margin:0px;
    padding:0px;
}
.top{
    width: 100%;
    height: 50px;
    background-color:pink;
}
.top_content{
    width:75%;
    height: 50px;
    margin:0px auto;
    background-color:blue;
}
.body{
    margin:20px auto;
    width: 75%;
    height: 1500px;
    background-color: blueviolet;
}
.body_img{
    width:100%;
    height: 400px;
    background-color:darkorange;
}
.body_content{
    width:100%;
    height:1100px;
    background-color: brown;
}

.body_no{
    width: 100%;
    height: 50px;
    background-color:aqua;

}
.footing{
    width:75%;
    height: 400px;
    background-color: chartreuse;
    margin:0px auto;
}
.footing_content{
    width:100%;
    height: 350px;
    background-color: crimson;

}
.footing_subnav{
    width: 100%;
    height: 50px;
    background-color-black;
}